RIP my friend

On March 11 2008 at 8:45 PM Max lost his life due to a large abdominal tumor. My family and I are trying to get through this but it will take time. 6 months ago my other dog Ruby was diagnosed with bone cancer and she had her right hnd leg removed and just finished up her chemo in January and now this. I don't understand 2 dogs 6 months apart diagnosed with cancer??????